Kromatografi Lapis Tipis (KLT) Quiz

What is the definition of chromatography?

• A process of separating substances by differential migration in a system consisting of two phases

• A process of mixing substances to create a new compound

• A process of analyzing substances using a microscope

• A process of measuring the density of substances

What is the stationary phase in Thin Layer Chromatography (TLC)?

• The phase that emits UV light for detection

• The phase that moves continuously in a specific direction

• A thin, even layer made of fine powder on a glass, plastic, or aluminum plate

• The phase that determines the Rf value of a compound

How is the detection of compounds done in TLC?

• Direct observation under visible light or UV light

• Detection through mass spectrometry

• Detection using X-ray technology

• Detection through infrared spectroscopy

What is the purpose of using a preadsorbent zone in TLC plates?

• To prevent the sample from spreading too much

• To enhance the separation of compounds

• To reduce the time required for detection

• To increase the Rf value of the compounds

What is the main use of TLC?

• Quantitative analysis of compounds

• Identification of compounds

• Determining the molecular weight of compounds

• Measuring the boiling point of compounds

What is the purpose of using a bejana kromatografi in TLC?

• To calculate the density of the compounds

• To hold the TLC plate during the chromatography process

• To measure the pH of the compounds

• To determine the melting point of the compounds

What is the Rf value of a compound in TLC?

• The ratio of the distance traveled by the stationary phase to the distance traveled by the mobile phase

• The ratio of the distance traveled by the compound to the distance traveled by the stationary phase

• The ratio of the distance traveled by the compound to the distance traveled by the mobile phase

• The ratio of the distance traveled by the mobile phase to the distance traveled by the stationary phase

What is the purpose of using a pipet mikro in TLC?

• To detect the compounds under UV light

• To measure the volume of the mobile phase

• To apply the sample onto the TLC plate

• To measure the density of the compounds

Which of the following is an example of a plant used in TLC?

• All of the above

• Piper nigrum

• Curcuma domestic

• Morus alba